I do not believe in absolute terms the questionnaire that claims to be "absolutely anonymous."

"Don't be stupid"

I think so.

To begin with, it is difficult to make a questionnaire that does not identify individuals in a questionnaire conducted using the Internet.

When the results of the questionnaire are disclosed by ratio, if the number of parameters is small (about 10 people), identification of the person is easy.

No matter how large the sample size, some individuals are visible, from graphs and numerical causal relationships and everyday behavior.

It's as easy as a junior high school entrance exam, if the number after the decimal point is presented, the integer value (number of people) can be derived.

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"I'm eating food by statistical analysis and data analysis"

I thought it.

At least when I fill out the survey, I have prepared to

"characters dedicated to surveys".

and responded.